21468860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{1153}}^1$

素因数の和:1195

約数の個数: 72

約数和(自身を含む): 55253520

約数和(自身を除く): 33784660

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 49, 70, 76, 95, 98, 133, 140, 190, 196, 245, 266, 380, 490, 532, 665, 931, 980, 1153, 1330, 1862, 2306, 2660, 3724, 4612, 4655, 5765, 8071, 9310, 11530, 16142, 18620, 21907, 23060, 32284, 40355, 43814, 56497, 80710, 87628, 109535, 112994, 153349, 161420, 219070, 225988, 282485, 306698, 438140, 564970, 613396, 766745, 1073443, 1129940, 1533490, 2146886, 3066980, 4293772, 5367215, 10734430, 21468860]

約数ペア:

[(1, 21468860), (2, 10734430), (4, 5367215), (5, 4293772), (7, 3066980), (10, 2146886), (14, 1533490), (19, 1129940), (20, 1073443), (28, 766745), (35, 613396), (38, 564970), (49, 438140), (70, 306698), (76, 282485), (95, 225988), (98, 219070), (133, 161420), (140, 153349), (190, 112994), (196, 109535), (245, 87628), (266, 80710), (380, 56497), (490, 43814), (532, 40355), (665, 32284), (931, 23060), (980, 21907), (1153, 18620), (1330, 16142), (1862, 11530), (2306, 9310), (2660, 8071), (3724, 5765), (4612, 4655)]